{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "potential therapeutic event", "arguments": ["Subject.Age", "Treatment.Route", "Effect", "Treatment.Duration", "Subject.Race", "Subject.Population", "Combination.Drug", "Treatment.Drug", "Subject", "Treatment.Freq", "Treatment", "Treatment.Time_elapsed", "Subject.Gender", "Treatment.Disorder"]}], "input": "A retrospective review of TTP patients with quinine-associated thrombotic microangiopathy (TMA) for whom ADAMTS13 was measured before plasma exchange was performed."}
{"potential therapeutic event": []}